[PATCH] dmaengine: ste_dma40: fix autosuspend cleanup on probe failure

[Krzysztof Kozlowski]

On 08/08/2026 12:56, Guangshuo Li wrote:
> d40_probe() calls pm_runtime_use_autosuspend(), but its error path does
> not call the matching pm_runtime_dont_use_autosuspend() before
> disabling runtime PM.
> 
> If the autosuspend delay is set to a negative value while autosuspend
> is enabled, the runtime PM core increments usage_count to prevent
> runtime suspend. Without calling pm_runtime_dont_use_autosuspend()
> during cleanup, this reference is not dropped and usage_count remains
> unbalanced.
> 
> Add the missing pm_runtime_dont_use_autosuspend() call to the probe
> failure path before disabling runtime PM.
> 
> This issue was found by manual code inspection.
> 
> Fixes: 8d318a50b3d7 ("DMAENGINE: Support for ST-Ericssons DMA40 block v3")
> Cc: stable at vger.kernel.org
> Signed-off-by: Guangshuo Li <lgs201920130244 at gmail.com>

You sent vast amount of patches, all separate, making it very difficult
to track and respond in efficient way. Do not do that.

Group your work per subsystem.

You were asked to clarify and respond to incorrect fixes statement. I do
not see how you clarified and responded at all.

Best regards,
Krzysztof